LAS VEGAS, March 3 /PRNewswire-FirstCall/ -- On February 29, 2008,
Southwest Gas Corporation (NYSE: SWX) filed its annual report on Form 10-K,
including audited financial statements, with the Securities and Exchange
Commission. The annual report on Form 10-K is available on the company's Web
site, http://www.swgas.com/investorrelations, and shareholders can receive a
paper copy of the company's complete audited financial statements free of
charge by contacting the company at Shareholder Services, P. O. Box 98511, Las
Vegas, NV 89193-8511, by phone at (800) 331-1119 or (702) 876-7280, or by
e-mail at srs@swgas.com.

This press release may contain statements which constitute
"forward-looking statements" within the meaning of the Private Securities
Litigation Reform Act of 1995 (Reform Act). All such forward-looking
statements are intended to be subject to the safe harbor protection provided
by the Reform Act. A number of important factors affecting the business and
financial results of the Company could cause actual results to differ
materially from those stated in the forward-looking statements. These factors
include, but are not limited to, the impact of weather variations on customer
usage, customer growth rates, the effects of regulation/deregulation, the
timing and amount of rate relief, and changes in rate design.